airing down

[yoder519]

bit of a newb question, but what kind of PSI should i air down to to wheel? without popping s bead 35 12.50 xterrains on 15x8s

 

[foreman1063]

I used to run around 10 psi with that set up without any problems.

 

[J.C.]

I used to run 7 psi regularly on a Wrangler with that tire/rim combo. Gonna depend on several factors as to how low you might be able to go without problems, including the weight of the vehicle, terrain, driving style, speed, etc.

 

[RenegadeT]

good info above. Be sure to air up if you're not trailering home. If I didnt have air available, I wouldnt go much lower than 18psi or so.
A good way to eyeball it is to watch the sidewall start bulging as you air down. There is lots of traction to be gained going from 20 to 10psi.

 

[yoder519]

yea im goin to callentee this weekend. last time i went with bald 35 bfgs and didnt air dwon. never do that again. i dont have on board air and i dont trailer home, ill put air back in it when i get to that gas station right next to it. thanks for the info guys

 

[cj777]

I run 8 psi on with 12.50 wide tires on 15x8 on my tj. Never lost a bead.

 

[jds97Wrangler]

I run 7-8 PSI with that wheel and tire combo. But it is also as Jc sa[d you need to base your air pressure on the conmditions you are wanting to wheel in. 7-8 PSI works great for rocks but it will not work as well in mud because it limit the tires ability to self clean.

 

[PAT Ventures]

There's a tire size, weight, air pressure chart here. Looks like maybe a good starting place. Every thing is relative though.

http://www.jeepfan.com/tech/tech_airingdown.htm

 

[yoder519]

thanks fellers and thanks for the link 454